Query Performance Analyzer Overview Analyze slow database queries using execution plans, wait statistics, and I/O metrics across PostgreSQL, MySQL, and MongoDB. This skill captures EXPLAIN output, identifies sequential scans on large tables, detects missing indexes, measures buffer cache hit ratios, and produces actionable optimization recommendations ranked by expected performance impact. Prerequisites - Database credentials with permissions to run (PostgreSQL), (MySQL), or (MongoDB) - extension enabled for PostgreSQL (provides aggregated query statistics) - Access to slow query logs or perf…